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import json
import requests
import datetime
from requests.auth import HTTPBasicAuth

# using local http proxy to log requests and responses
proxies = {
    "http": "http://127.0.0.1:8888",
    "https": "https://127.0.0.1:8888",
}

# specify basic auth
auth = HTTPBasicAuth("admin", "admin")

# specify uri
uri = "https://demo006.service-now.com/incident.do?JSONv2&sysparm_query=sys_id=471d4732a9fe198100affbf655e59172"

# define http headers for request
headers = {
    "Accept": "application/json;charset=utf-8",
    "Content-Type": "application/json"
}

# define payload for request, note we are passing the sysparm_action variable in the body of the request
# http://wiki.servicenow.com/index.php?title=JSONv2_Web_Service#update
payload = {
    'sysparm_action': 'update',
    'short_description': 'incident updated via JSONv2 API at ' + str(datetime.datetime.now())
}

# issue request
r = requests.post(url=uri, data=json.dumps(payload), auth=auth, proxies=proxies, verify=False, headers=headers)
content = r.json()

# evaluate response
assert (r.status_code == 200)
print "Response Status Code: " + str(r.status_code)
print "Response JSON Content: " + str(content)